Trolley



(No Model.)

D. LIPPY, I. E. PINFROGK, G. A. RINEHART 8u D. R. FRANCIS.`

l TROLLEY.

Patented July 28, 1.896.

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UNITED STATES PATENT OEEICE.

DAVID LIPPY, IRA ELMER FINFROOK, GEORGE ATTIGG RINEHART, VAND DAVID RAITT FRANCIS, OF MANSFIELD,KOHIO.

TROLLEY.

SPECIFICATION forming part of Letters Patent No. 564,794, dated July 28, 1896.

Application led September 24, 1895. Serial No. 563,537. (No model.)

To all whom t may concern,.-

Beit known that we, DAVID LIPrY, IRA EL- MER FINERooK, GEORGE ATTIGG RINEHART, and DAVID RAITT FRANCIS, citizens of the United States, residing at Mansfield, in the county of Richland and State of Ohio, have invented certain new and useful Improvements in Trolleys; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters of reference marked thereon.

The present invention relates to overhead trolleys for electric railways, and has for its object the provision of a more efcient and satisfactory base or support for holding the trolley-wheel against the conductor-wire than has heretofore been devised; and to this end said invention consists in the trolley base or support having the construction and combination of parts substantially as hereinafter specified.

In the annexed drawings, Figure l is a perspective view of our invention, and Fig. 2 is a longitudinal vertical section thereof.

In the carrying of our invention into practice we secure upon the top of the carin any suitable way a bearing-plate A, to the center of which is pivoted a base B, the pivoting means being a pintle b and socket c.

Rising from the center of the base B is a post or standard O, to the upper end of which is pivoted the masthead D, that on opposite sides is provided with two diametrically-extending arms E and E. Each of the latter is connected by a chain F with a crankarm G on a horizontal shaft H, that is journaled at its inner end in an opening in the post C and in a block h rising from the base B at its end, the arm G being placed between the block and the post. Encircling vthe portion of the shaft that is outside the block is a coiled spring I, whose inner end is attached to a collar J, pinned to the shaft, and whose outer end is fastened to the head or end lo of a tube K, that incloses the spring and has its inner end contained within an opening in the outer side of the block h, and held from rotation and removal by a set-screw L, tapped through the block. By the construction debe the power exerted by the spring.

scribed` the Aspring is adapted to rotate the shaft and its arm G in one direction, such direction being that which swings the mastto and holds it in a vertical position, and of course to eifect this result the two springs I, as they pull in opposite directions, are given the same tension. This, however, is not absolutely necessary, as the arms G are arranged to strike and be stopped by the base B when the mast is in a vertical position. Such stoppage is also desirable to prevent needless rotation of a shaft and its arm when its chain is relaxed because of the downwar swinging of the mast.

To enable the tension of the spring Ito be readily adjusted, the end of the shaft is projected beyond the outer end 7c of the tube K, and is shaped for the application of a tool to rotate it. Of course this necessitates that the arm G should be fastened to the shaft by means that permit its being readily loosened and tightened, and accordingly a set-screw M is employed as the fastening means.

Vhether the mast be swung in one direction or the other from a vertical toward a horizontal position, one arm G or the other will be raised and the tension of its spring increased. The effective power of the spring, however, is diminished, as the chain that is raising the arm is at the same time moving toward the pivot of the mast, and of course the nearer it gets to such pivot the less will advantage of this construction is that as the power of the spring is greatest when the mast is in or near a vertical position there is always ample pressure applied to keep the wheel in contact with high wires, and as the power is lessened when the mast is at a point intermediate the vertical and the horizontal danger of cutting the wheel from excessive pressure thereof against the wire is avoided. The power of the spring being slight when the mast is in a horizontal position, manipulation of the mast to shift its position is ren- The dered easy, as is also the holding of the same IOO shown, it is to be understood that the scope of our invention is not limited thereto, as changes in such respects may be made which will involve no change in principle.

` That we claim is- 1. The combination of the pivoted standard having a suitable base with upwardly-extending blocks at its ends which have openings or sockets on their outer sides, horizontal shafts extending through 'the blocks, coiled springs encircling the shafts, tubes inclosing the shafts and springs and having their inner ends seated in the openings or sockets of the blocks, a masthead pivotally connected to the standard, and intermediate connections between the shafts, the masthead and springs, substantially as and for the purpose set forth.

2. The combination of a base having a post or upright, a masthead pivoted to the post DAVID LIPPY.

IRA ELMER FINFROCK. GEORGE ATTIGG RINEHART. DAVID RAITT FRANCIS.

W'itn esses L. J. MCCRAY, T. Y. MCCRAY. 

